Spraying apparatus.



No. 629,269. Patented luly I8, |899.

S. H. PILLAR.

SPRAYING APPARATUS.

(Appximion fueanee. 2o, 189e.) f (H0 Modl.)

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- UNITED STATES PATENT 'OirricraA SAMUEL HUDSON PILLAR, or DUBLIN, IRELAND. f

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I' SPECIFICATIQN forming' part 0f Letters Patent 210.629,269, dated July 18, 189,9.

, Application ledDeoemher 20, 1898. Serial No. 699,842. (No model.) I Y be constantly maintained'throughout the op-A eration ofthe device, thus insuring a thorrough mixing of the liquid used and preventing any accumulation of sediment in the bottom of the tank. A

To these ends the invention consists in providing the sprayer tank or reservoirwith au agitating vesselor chamber whichon 'one stroke of the operatingpump becomes filled with 'the liquid and on the reverse stroke of the pump has this liquid forced from it through a suitable opening or openings by air under pressure across the bottom of the sprayer tank. v

The invention further consists in the details of construction hereinafter described.

In the accompanying drawings, Figure l is a central vertical section through the sprayertank, the agitating vessel and other parts being shown in elevation. Figs. 2 and 3 are similar views of modications.

Referringto the drawings, A indicatesthe sprayer tankor reservoir, which contains the liquid to beejected onto the plants.

B is an agitating vessel or chamber which, as shown in Fig. l, is situated at the center and rests upon the bottom of the tank A.

This agitating vessel is provided near its bottom with'a series of perforations C, formed at intervals entirely around the vessel B for the purpose hereinafter explained. f An air-pipe E is attached to the upper end of the agitating vessel, whence it extends upward to a point above the level of the liquid contained in the sprayer-tank, at which point it is provided with a small vent-opening F for the purpose hereinafter specified, and thence downward and outward through the side of the tank, where it terminates in nozzle e.

G is the discharge-pipe on the interior of the sprayer-tank and which extends from a serves to convey the liquid discharged from tank to the spraying-nozzle I', by'which it is sprayed uponthe plants.

t is a discharge cock or valve for regulating the discharge of the liquid. f

Y t is the `coupling between the sprayingnozzle and pipe I.

.I-is an lair-pump located at the side of the spraying-nozzle I', to which it is attached in any appropriate manner.

J is an air-pipe on the interior of the pipe I, attached at one end to the nozzle e and eX- tending through the pipe I and sprayiug nozzle I toa point near the discharge end of the latter, at which point it passes out through the side wall Aof the latter and connects with the air-pump J.

The operation of the device is as follows: The tank A having been charged through the opening II in its top, the liquid in the tank willenter the agitating vessel B through the apertures C and fill or nearly ill said vessel, lthe air escaping from the vessel through pipe E and the small vent-opening F. Now when the pump is operated air will upon the instroke of the pump-piston be forced through the pipe J and pipe E, with which it connects, 'Y

into the agitating vessel B, forcibly expelling the liquid therefrom out through the apertures C across the bottom ofthe tank A. By this operation a portion of the liquid contents of the tank A will be forced out through the dischargefpipe G and pipe I, with which it connects, to the spraying-nozzle I', through which it will be sprayed upon j the plants. Upon the reverse or out stroke of the pumppiston the liquid in the tank A will again flow into the vessel B through the apertures C, the air escaping from the vessel, as before, through pipe E and vent-opening F, and upon IOO the piston being again forced in the iirst-de- It will be seen from this that during the optom of the tank A to form a passage of communication between them.

In the modification shown in Fig. 3 the vessel B is shown supported away from the bottom of the tank A by struts D, the vessel B in this instance being provided with a perforated bottom through which it communicates with the tank A. -In both of these modifications, however, the operation will be the same as that described in connection with Fig. l.

I-Iaving thus described my invention, what I claim is- 1. In apparatus for spraying plants and for other like purposes in which the liquid to be sprayed is put under pressure by compressed air so that it may be ejected with force from a spraying-nozzle, the combination with the liquid container or tank, of an inner vessel immersed therein, having its interior in communication at its lower end with the liquid near the bottom of the tank and at its upper end with the air-space above the level of liquid in the tank, means for supplying an intermittent air-pressure to said vessel to alternately force the liquid therein down and then allow it to rise again therein as the airpressure above escapes into the air-space in the tank, and an o utlet-pi pe for delivering the liquid to the spraying-nozzle, substantially as described.

2. In apparatus for spraying plants and for other like purposes in which the liquid to be sprayed is put under pressure by compressed air so that it may be ejected with force from a spraying-nozzle, the combination with the liquid container or tank, of an inner vessel immersed therein having its interior in communication at its lower end with the liquid near the bottom of the tank, and its upper end closed to the liquid in the tank, a pipe leading from the upper end of said vessel to the exterior of the tank and having an upward bend reaching above the level of the liquid in the tank and an air-escape opening in ysaid bend communicating with the airspace in the tank, means for supplying an intermittent air-pressure to said pipe, and an outlet-pipe for delivering the liquid to the spraying-nozzle, substantially as described.

3. In a spraying apparatus, the combina` tion with a sprayer tank or reservoir, of a spraying-nozzle, a disch arge-pipe leading from said tank to said nozzle, an air-pu mp situated adjacent to the spraying-nozzle and an airpipe connected with the air-pu mp and extending into and through the discharge-pipe and connected with the sprayer-tank, substantially as described.

In witness whereof I have hereunto signed my name, this 5th day of December, 1808, in the presence of two subscribing witnesses.

SAMUEL HUDSON PILL/XR..

Witnesses:

WILLIAM ARTHUR BEALE, THOMAS IIEWITT. 

